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WO2009128758A1 - Outil, corps d'outil et tête de coupe - Google Patents

Outil, corps d'outil et tête de coupe Download PDF

Info

Publication number
WO2009128758A1
WO2009128758A1 PCT/SE2009/000161 SE2009000161W WO2009128758A1 WO 2009128758 A1 WO2009128758 A1 WO 2009128758A1 SE 2009000161 W SE2009000161 W SE 2009000161W WO 2009128758 A1 WO2009128758 A1 WO 2009128758A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting head
tool body
coupling portion
coupling
gripping surfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2009/000161
Other languages
English (en)
Inventor
Stefan Frejd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seco Tools AB
Original Assignee
Seco Tools AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seco Tools AB filed Critical Seco Tools AB
Priority to KR1020107022779A priority Critical patent/KR101513764B1/ko
Priority to CN2009801129727A priority patent/CN102006959B/zh
Priority to EP09732147.5A priority patent/EP2276598B1/fr
Publication of WO2009128758A1 publication Critical patent/WO2009128758A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2205/00—Fixation of cutting inserts in holders
    • B23B2205/02—Fixation using an elastically deformable clamping member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/32—Press fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/02—Connections between shanks and removable cutting heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/03—Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/40—Flutes, i.e. chip conveying grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23C2222/28—Details of hard metal, i.e. cemented carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/31—Diamond
    • B23C2226/315—Diamond polycrystalline [PCD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2250/00—Compensating adverse effects during milling
    • B23C2250/12—Cooling and lubrication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/892—Tool or Tool with support with work-engaging structure detachable from cutting edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/907—Tool or Tool with support including detailed shank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9098—Having peripherally spaced cutting edges with means to retain Tool to support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means

Definitions

  • the present invention relates to a tool for rotary cutting machining according to the preamble of claim 1 with a tool body and a replaceable cutting head detachably attachable to the tool body.
  • the invention also relates to a tool body and a cutting head included in such a tool.
  • a tool according to the preamble of claim 1 is previously known from US 5 988 953 A and US 5 971 673 A.
  • the mutual gripping surfaces of the tool body and the cutting head are conical and widen in the direction towards the rear end of the tool body and the cutting head, respectively, so as to thereby achieve a positive locking in axial direction between the tool body and the cutting head.
  • This positive locking prevents the cutting head from being displaced in axial direction away from the tool body, for instance when the tool is pulled out of a bore drilled by means of the tool.
  • a disadvantage with these conical gripping surfaces is that the tolerance requirements are high for these surfaces and that they are relatively complicated to achieve by means of mechanical machining.
  • the object of the present invention is to achieve a tool of the type mentioned by way of introduction with a new and favourable design.
  • said object is achieved by means of a tool having the features defined in claim 1.
  • the cutting head is prevented from being displaced in axial direction away from the tool body by means of the mutual engagement between the internal gripping surfaces of the tool body and the corresponding external gripping surfaces of the cutting head, the gripping surfaces of the tool body being cylindrical and extending in parallel with the centre axis of the tool body and the gripping surfaces of the cutting head being cylindrical, extending in parallel with the centre axis of the cutting head and having a radius which is larger than the radius of said internal gripping surfaces.
  • the cylindrical external gripping surfaces of the cutting head and the cylindrical internal gripping surfaces of the tool body are dimensioned so as to, by engagement with each other, prevent the cutting head from being displaced in axial direction away from the tool body when the cutting head is attached to the tool body. Consequently, the cutting head is prevented by these cylindrical gripping surfaces from sliding in axial direction away from the tool body, and the cutting head is forced by these cylindrical gripping surfaces to accompany the tool body when the tool body is pulled in axial direction out of a bore drilled by means of the tool.
  • the coupling portion of the tool body and the coupling portion of the cutting head can thereby be given a shape that is simplified and favourable with respect to the manufacturing of the tool body and the cutting head. Owing to the fact that the gripping surfaces of the tool body are cylindrical and parallel with the centre axis of the tool body, an achievement of these gripping surfaces by mechanical machining of a blank prepared for the formation of a tool body is facilitated, and owing to the fact that the gripping surfaces of the cutting head are cylindrical and parallel with the centre axis of the cutting head, and achievement of these gripping surfaces by mechanical machining of a blank prepared for the formation of a cutting head is facilitated.
  • a stop surface of a respective coupling leg extends in parallel with the centre axis of the tool body and the corresponding stop surface of the cutting head extends in parallel with the centre axis of the cutting head.
  • the internal gripping surfaces of the coupling portion of the tool body are arranged on the inside of a respective one of said coupling legs at the level of the stop surface of the coupling leg, and the external gripping surfaces of the coupling portion of the cutting head are arranged at the level of the stop surfaces of the cutting head.
  • the invention also relates to a tool body having the features defined . in claim 6 and a cutting head having the features defined in claim 10.
  • Fig 1 a perspective view of a cutting head and a tool body included in a tool according to an embodiment of the present invention in the form of a twist drill, with the cutting head and the tool body shown separated from each other,
  • Fig 2 a perspective view corresponding to Fig 1 , but with the cutting head attached to the tool body
  • Fig 3 a lateral view of the tool according to Fig 2,
  • Fig 4 a perspective view of the front part of the tool according to Fig 2,
  • Fig 5 a lateral view in a first rotary position of the front part of the tool body included in the tool according to Fig 2,
  • Fig 6 a lateral view in a second rotary position of the front part of the tool body
  • Fig 7 a perspective view of the front part of the tool body
  • Fig 8 a perspective view from the front of the cutting head included in the tool according to Fig 2,
  • Fig 9 a lateral view of the cutting head
  • Fig 10 a perspective view from behind of the cutting head
  • Fig 11 a cross-section along the line Xl-Xl in Fig 3, with the cutting head shown in an engagement position, and Fig 12 the cross-section of Fig 11 , with the cutting head shown in a free position.
  • the tool 1 of the invention is intended to be rotated for cutting machining of a workpiece.
  • the tool is designed as a twist drill, but the tool of the invention could also be designed as another type of tool for rotary cutting machining, such as for instance a milling cutter or the similar.
  • the intended direction of rotation of the tool 1 for machining is marked with the arrow R in Figs 2, 4 and 1 1 -12.
  • This direction of rotation is in the following denominated "machining direction of rotation" and consequently constitutes the direction in which the tool is intended to be rotated in order to achieve cutting machining of a, preferably metallic, workpiece.
  • the workpiece can be rotated while the tool is kept stationary.
  • the tool 1 comprises a tool body 10 and a replaceable cutting head 30, which is detachably attachable to the tool body.
  • the cutting head 30 is formed in a one piece of a suitable cemented carbide, i.e. made of pressed or injection moulded cemented carbide.
  • “Cemented carbide” here refers to WC, TiC, TaC, NbC etc, in sintered combination with a binder metal, such as for instance Co or Ni.
  • the cutting end is preferably at least partially coated with a layer of for instance AI 2 O3, TiN and/or TiCN. I some cases, it can be suitable to have the cutting edges made of superhard materials, such as CBN or PCD, attached by soldering.
  • the tool body 10 is likewise made in one piece, preferably of steel or other suitable metallic material.
  • the tool body 10 is symmetrically designed as seen in cross-section. At its rear end, the tool body 10 has an attachment portion 1 1 , through which the tool body is intended to be attached to a chuck or the similar of a drilling machine or another suitable type of working machine. At its front end, the tool body has a coupling portion 12 for receiving a corresponding coupling portion 32 of the cutting head. As appears from Figs 5-7, the coupling portion 12 of the tool body is provided with two coupling legs 13a, 13b projecting in the axial direction of the tool body and arranged on opposite sides of the centre axis C1 of the tool body. Between the coupling legs 13a, 13b there is a space 14 for receiving the coupling portion 32 of the cutting head.
  • Internal gripping surfaces 15a, 15b are arranged in this space 14. These internal gripping surfaces are designed for engagement with corresponding external gripping surfaces 35a, 35b (see Figs 8-12) of the coupling portion of the cutting head, as will be more closed described below. In the illustrated example, these gripping surfaces 15a, 15b are two in number.
  • the respective coupling leg 13a, 13b is provided with a surface 16a, 16b, here denominated stop surface, which is designed for abutment against a corresponding stop surface 36a, 36b (see Figs 8-12) of the coupling portion of the cutting head in order to transfer torque from the tool body to the cutting head during rotation of the tool in its machining direction of rotation R.
  • the internal gripping surfaces 15a, 15b of the coupling portion of the tool body are suitably arranged on the inside of a respective one of the coupling legs 13a, 13b at the level of the stop surface 16a, 16b of the coupling leg, as illustrated in Figs 6 and 7.
  • the stop surface 16a, 16b of the coupling leg borders on a support surface 17a, 17b extending perpendicularly to the centre axis C1 of the tool body.
  • Each one of these support surfaces 17a, 17b is designed for abutment against a corresponding support surface 37a, 37b (see Figs 9 and 10) of the coupling portion of the cutting head in order to carry axial forces when the cutting head 30 is pressed against a workpiece.
  • the respective stop surface 16a, 16b of the coupling portion 12 of the tool body is parallel with the centre axis C1 of the tool body, and the stop surface 16a, 16b consequently extends perpendicularly to the support surface 17a, 17b bordering . thereon.
  • the replaceable cutting head 30 of the tool is shown in closer detail in Figs 8-10.
  • the cutting head is symmetrically designed as seen in cross-section.
  • the cutting head has a cutting portion 40, which in a conventional manner comprises at least one cutting edge 41 extending in the radial direction of the cutting head.
  • the cutting head 30 is provided with two cutting edges 41.
  • a clearance surface 42 is arranged behind the respective cutting edge 41 , as seen in the machining direction of rotation R of the cutting head.
  • a coolant channel 43 opens into the respective clearance surface 42.
  • the respective coolant channel 43 opens into a bottom surface 44 on the underside of the cutting head.
  • the respective coolant channel 43 is connected to a corresponding coolant channel 23 which extends through the tool body and which opens into a bottom surface 24 of the space 14 between the coupling legs 13a, 13b of the tool body (see Fig 7).
  • the distance in axial direction between the bottom surface 24 of the space 14 and the support surfaces 17a, 17b of the tool body is suitably somewhat larger than the distance in axial direction between the bottom surface 44 of the cutting head 30 and the support surfaces 37a, 37b of the cutting head, so that there is a small clearance between these bottom surfaces 24, 44 when the support surfaces 37a, 37b of the cutting head abut against the support surfaces 17a, 17b of the tool body, as illustrated in Fig 4.
  • the above-mentioned coupling portion 32 which is designed for en- gagement with the coupling portion 12 of the tool body and receivable in the space 14 between the coupling legs 13a, 13b of the coupling portion of the tool body, is located below the cutting portion 40.
  • External gripping surfaces 35a, 35b are arranged on the coupling portion 32 of the cutting head on either side of the centre axis of the cutting head. In the illustrated example, these gripping surfaces 35a, 35b are two in number.
  • the external gripping surfaces 35a, 35b of the cutting head are designed for engagement with the corresponding internal gripping surfaces 15a, 15b in the space 14 of the coupling portion 12 of the tool body.
  • the coupling portion 32 of the cutting head is provided with two stop surfaces 36a, 36b arranged on opposite sides of the centre axis of the cutting head, each of which being designed for abutment against the stop surface 16a, 16b of one of the coupling legs 13a, 13b of the coupling portion of the tool body.
  • the external gripping surfaces 35a, 35b of the coupling portion of the cutting head are suitably arranged at the level of the stop surfaces 36a, 36b of the cutting head, as illustrated in Figs 8-10.
  • the respective stop surface 36a, 36b of the cutting head borders on a support surface 37a, 37b extending perpendicularly to the centre axis of the cutting head.
  • These support surfaces 37a, 37b are designed for abutment against the corresponding support surfaces 17a, 17,b of the coupling portion of the tool body.
  • the respective stop surface 36a, 36b is parallel with the centre axis of the cutting head, and the stop surface 36a, 36b consequently extends perpendicularly to the support surface 37a, 37b bordering thereon.
  • the coupling portion 32 of the cutting head is turnable in the space 14 of the coupling portion 12 of the tool body about the centre axis of the cutting head to and fro between: - a free position (see Fig 12), in which the stop surfaces 36a, 36b of the coupling portion of the cutting head do not abut against the corresponding stop surfaces 16a, 16b of the coupling legs 13a, 13b and the gripping surfaces 35a, 35 of the cutting head are not in holding engagement with the corresponding gripping surfaces 15a, 15b of the tool body; and
  • an engagement position in which the stop surfaces 36a, 36b of the coupling portion of the cutting head abut against the corresponding stop surfaces 16a, 16b of the coupling legs and the gripping surfaces 35a, 35b of the cutting head are in holding engagement with the corresponding gripping surfaces 15a, 15b of the tool body.
  • the cutting head 30 When the cutting head 30 is in said free position, the cutting head can be moved in axial direction away from the tool body 10, out of the space 14 between the coupling legs 13a, 13b of the tool body.
  • the cutting head 30 is in said engagement position, the cutting head is locked to the tool body 10 and the tool 1 is ready for machining of a workpiece.
  • the turning of the cutting head 30 between the free position and the engagement position or vice versa is suitably performed by means of an implement in the form of a key of the like, which is brought into temporary engagement with the cutting head.
  • the internal gripping surfaces 15a, 15b of the coupling portion 12 of the tool body are cylindrical and arranged to extend in parallel with the centre axis C1 of the tool body.
  • the corresponding external gripping surfaces 35a, 35b of the coupling portion of the cutting head are cylindrical and arranged to extend in parallel with the centre axis of the cutting head.
  • These cylindrical external gripping surfaces 35a, 35b of the cutting head have a radius that is somewhat larger, preferably between 1-3 % larger, than the radius of the cylindrical internal gripping surfaces 15a, 15b of the tool body, so that there will be a certain elastic deflection of the coupling legs 13a, 13b in radial direction when the coupling portion 32 of the cutting head is turned from the free position to the engagement position.
  • the cylindrical external gripping surfaces 35a, 35b of the cutting head and the cylindrical internal gripping surfaces 15a, 15b of the tool body are dimensioned so as to, by engagement with each other, prevent the cutting head 30 from being displaced in axial direction away from the tool body 10 when the cutting head is attached to the tool body.
  • the cutting head 30 and the tool body lack axially acting holding means which by mutual positive locking prevents the cutting head 30 from being displaced in axial direction away from the tool body 10 when the cutting head is attached to the tool body.
  • such a holding of the mutually cooperating gripping surfaces 15a, 15b, 35a, 35b is achieved with a minor assistance from the frictional forces between the mutually cooperating stop surfaces 16a, 16b, 36a, 36b.
  • the respective stop surface 16a, 16b of the tool body is suitably so arranged that it has its extension in a plane which does not cross the centre axis C1 of the tool body, in which case the corresponding stop surface 36a, 36b of the cutting head consequently has its extension in a plane which does not cross the centre axis of the cutting head.
  • the lines of contact L1 a, Li b between the respective stop surface 16a, 16b of the tool body and the corresponding stop surface 36a, 36 of the cutting head in this case extends at an angel in relation to a line L2 crossing the centre axis C1 of the tool body and the radial extreme points Pa, Pb of the lines of contact L1 a and Li b, the distance between the respective line of contact L1 a, Li b and the line L2 increasing in the direction towards the centre of the tool.
  • the respective line of contact L1 a, Li b is inclined forward in relation to the line L2 in the intended machining direction of rotation R of the tool.
  • the cutting head 30 through the stop surfaces 36a, 36b, 16a, 16b will exert a force on the coupling legs 13a, 13b of the tool body directed towards the centre of the tool during machining of a workpiece, which in its turn results in that the internal gripping surfaces 15a, 15b of the coupling legs are pressed against the corresponding external gripping surfaces 35a, 35b of the cutting head.
  • the angle between the line L2 and the respective line of contact L1 a, Li b is suitably between 10- 30°.
  • Two chip flutes 18 are arranged on the outside of the tool body and extend, preferably helically, diametrically opposite each other along the tool body 10 from an area in the vicinity of the attachment portion 1 1 and up to the coupling portion 12. Each one of these chip flutes 18 extends up to an area between the two coupling legs 13a, 13b and is arranged to connect to a corresponding chip flute 38 on the outside of the cutting head when the cutting head 30 is attached to the tool body 10.
  • the chip flutes 18, 38 could alternatively be rectilinear instead of helical.
  • the chip flutes 18, 38 are intended to carry away the chips generated by the cutting edges 41 during machining of a workpiece.
  • the cutting head 30 is provided with two guide edges 39a, 39b arranged diametrically opposite each other, which constitute the extreme surfaces of the cutting head in radial direction and which extend in the axial direction of the cutting head.
  • the tool 1 abuts against the hole wall of the bore through these guide edges 39a, 39b, the guide edges guiding the tool 1 so that the bore will be straight and round.
  • the cutting head 30 can be given a comparatively short extension in axial direction while maintaining a given length of the guide edges 39a, 39b, or the guide edges 39a, 39b can be given a comparatively long length while maintaining a given extension in axial direction of the cutting head.
  • the cutting head 30 can on its underside be provided with a centrally located guide pin 45 projecting in the axial direction of the cutting head, which guide pin is arranged to be received in a corresponding central recess 25 in the bottom of the space 14 between the coupling legs 13a, 13b when the coupling portion 32 of the cutting head is inserted into this space 14.
  • the guide pin 45 is suitably chamfered at its outer free end.
  • the coupling portion 32 of the cutting head is provided with two guide surfaces 48 arranged diametrically opposite each other, which extend in the axial direction of the cutting head.
  • Each one of these guide surfaces 48 is formed by a chamfer in the transition between a chip flute 38 and the gripping surface 35a, 35b bordering on the chip flute, and follows the helical path of the chip flute.
  • Guide surfaces 28 are likewise arranged on the respective coupling leg 13a, 13b, these guide surfaces 28 being formed by a chamfer in the transition between the stop surface 16a, 16b and the gripping surface 15a, 15b of the coupling legs 13a, 13b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention porte sur un outil pour un usinage par enlèvement de matière sur tour, comprenant un corps d'outil (10) et une tête de coupe remplaçable (30) apte à être fixée de façon détachable au corps d'outil. La tête de coupe comporte une partie accouplement qui est apte à être reçue dans un espace entre deux pattes d'accouplement faisant saillie axialement (13a, 13b) à partir du corps d'outil. Des surfaces de prise internes cylindriques (15a, 15b) sont agencées dans ledit espace et sont conçues pour une coopération avec des surfaces de prise externes cylindriques (35a, 35b) correspondantes de la tête de coupe. Les surfaces de prise de la tête de coupe et les surfaces de prise du corps d'outil sont dimensionnées de façon à empêcher, par une coopération mutuelle, un déplacement de la tête de coupe dans une direction axiale à l'opposé du corps d'outil lorsque la tête de coupe est fixée au corps d'outil. L'invention porte également sur un corps d'outil et sur une tête de coupe compris dans un tel outil.
PCT/SE2009/000161 2008-04-14 2009-03-26 Outil, corps d'outil et tête de coupe Ceased WO2009128758A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020107022779A KR101513764B1 (ko) 2008-04-14 2009-03-26 공구, 공구 본체 및 절삭 헤드
CN2009801129727A CN102006959B (zh) 2008-04-14 2009-03-26 刀具、刀具本体及切削头
EP09732147.5A EP2276598B1 (fr) 2008-04-14 2009-03-26 Outil pour usinage par coupe rotative

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0800834A SE532280C2 (sv) 2008-04-14 2008-04-14 Verktyg, verktygskropp och skärhuvud
SE0800834-4 2008-04-14

Publications (1)

Publication Number Publication Date
WO2009128758A1 true WO2009128758A1 (fr) 2009-10-22

Family

ID=41199318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/000161 Ceased WO2009128758A1 (fr) 2008-04-14 2009-03-26 Outil, corps d'outil et tête de coupe

Country Status (6)

Country Link
US (1) US8430609B2 (fr)
EP (1) EP2276598B1 (fr)
KR (1) KR101513764B1 (fr)
CN (1) CN102006959B (fr)
SE (1) SE532280C2 (fr)
WO (1) WO2009128758A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2939774A4 (fr) * 2012-12-28 2016-09-28 Kyocera Corp Mèche et procédé pour fabriquer un produit coupé l'utilisant
EP3427877A1 (fr) * 2017-07-10 2019-01-16 Sandvik Intellectual Property AB Insert de coupe rotatif et outil comportant des surfaces de support axialesinclinées

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533853C2 (sv) * 2009-06-23 2011-02-08 Sandvik Intellectual Property Borrverktyg för spånavskiljande bearbetning samt löstopp härför
DE102012200690B4 (de) * 2012-01-18 2021-06-17 Kennametal Inc. Rotationswerkzeug sowie Schneidkopf für ein solches Rotationswerkzeug
US8696264B2 (en) 2012-01-31 2014-04-15 Kennametal Inc. Modular cutting insert and method of making same
DE102012001732B4 (de) 2012-01-31 2022-11-10 Kennametal Inc. Werkzeugkopf für ein modulares Schaftwerkzeug, Schaftwerkzeug mit einem solchen Werkzeugkopf sowie Herstellungsverfahren für einen Werkzeugkopf
DE102013201062B4 (de) 2013-01-23 2018-09-13 Kennametal Inc. Bohrspitze
DE102013205889B3 (de) 2013-04-03 2014-05-28 Kennametal Inc. Kupplungsteil, insbesondere Schneidkopf für ein Rotationswerkzeug sowie ein derartiges Rotationswerkzeug
DE102013209371B4 (de) 2013-05-21 2021-04-29 Kennametal Inc. Kupplungsteil, insbesondere Schneidkopf für ein Rotationswerkzeug sowie hierzu komplementäres Kupplungsteil und Rotationswerkzeug
USD734790S1 (en) * 2013-06-12 2015-07-21 Element Six (Production) (Pty) Ltd Drill bit tip
DE102013220884B4 (de) * 2013-10-15 2022-02-17 Kennametal Inc. Modulares Trägerwerkzeug sowie Werkzeugkopf
KR101509954B1 (ko) * 2013-10-29 2015-04-07 한국야금 주식회사 절삭 인서트 및 인덱서블 드릴
DE102014206796B4 (de) 2014-04-08 2020-10-15 Kennametal Inc. Rotationswerkzeug, insbesondere Bohrer sowie Schneidkopf für ein solches Rotationswerkzeug
US11376675B2 (en) 2014-04-23 2022-07-05 Korloy Inc. Cutting tool having partially-removed film formed thereon
KR101537718B1 (ko) * 2014-04-23 2015-07-20 한국야금 주식회사 부분적으로 제거된 피막이 형성된 절삭공구
DE102014212714B4 (de) 2014-07-01 2022-02-17 Kennametal Inc. Bohrerkopf
JP6399389B2 (ja) * 2014-09-05 2018-10-03 住友電工ハードメタル株式会社 ヘッド交換式ドリル、およびヘッド交換式ドリル用のヘッド
CN104759664A (zh) * 2015-04-21 2015-07-08 成都锋宜精密工具制造有限公司 自锁式可换头硬质合金钻头
DE102015211744B4 (de) 2015-06-24 2023-07-20 Kennametal Inc. Rotationswerkzeug, insbesondere Bohrer, und Schneidkopf für ein solches Rotationswerkzeug
USD798922S1 (en) 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for rotary drill
US10071430B2 (en) 2015-10-07 2018-09-11 Kennametal Inc. Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head
US9937567B2 (en) * 2015-10-07 2018-04-10 Kennametal Inc. Modular drill
USD798921S1 (en) 2015-10-07 2017-10-03 Kennametal Inc. Cutting head for modular drill
JP1568742S (fr) * 2016-09-09 2017-02-06
US11235397B2 (en) * 2016-12-16 2022-02-01 Kennametal Inc. Side-activated modular drill
DE102017205166B4 (de) 2017-03-27 2021-12-09 Kennametal Inc. Modulares Rotationswerkzeug und modulares Werkzeugsystem
US10207337B2 (en) 2017-04-04 2019-02-19 Kennametal Inc. Front-loaded, side-activated modular drill
DE102017212054B4 (de) 2017-07-13 2019-02-21 Kennametal Inc. Verfahren zur Herstellung eines Schneidkopfes sowie Schneidkopf
US10799958B2 (en) 2017-08-21 2020-10-13 Kennametal Inc. Modular rotary cutting tool
EP3456446B1 (fr) * 2017-09-15 2025-11-05 Sandvik Intellectual Property AB Assemblage de pièces d'outil de coupe
EP3488952B1 (fr) 2017-11-24 2024-03-13 Seco Tools Ab Procédé de fabrication d'une tête d'outil
DE102019116160A1 (de) 2018-06-20 2019-12-24 Kennametal Inc. Seitlich geschlossener modularer Bohrer mit federunterstütztem Auswurf
US11090736B2 (en) 2018-12-10 2021-08-17 Kennametal Inc. Side-activated modular drill
CN112077370B (zh) 2019-06-13 2024-10-01 肯纳金属印度有限公司 可转位钻头刀片
US11471952B2 (en) 2020-03-19 2022-10-18 Kennametal Inc. Cutting tool having replaceable cutting head and method of securing a replaceable cutting head
US11883888B2 (en) 2021-06-28 2024-01-30 Kennametal Inc. Modular drill with enhanced bump-off capability
CN115703157A (zh) 2021-08-17 2023-02-17 肯纳金属印度有限公司 具有冷却剂系统的可转位钻头组件
JP1743974S (ja) * 2022-11-04 2023-05-12 切削工具用ホルダ
JP1743973S (ja) * 2022-11-04 2023-05-12 切削工具用ホルダ
JP1743975S (ja) * 2022-11-04 2023-05-12 切削工具用ホルダ
EP4563270A1 (fr) 2023-11-28 2025-06-04 AB Sandvik Coromant Outil de coupe rotatif avec tête de coupe remplaçable
EP4563271A1 (fr) 2023-11-30 2025-06-04 AB Sandvik Coromant Outil de coupe rotatif avec tête de coupe remplaçable
EP4574320A1 (fr) 2023-12-21 2025-06-25 AB Sandvik Coromant Tête de coupe pour un outil de forage et outil de forage comprenant une telle tête de coupe
EP4574319A1 (fr) 2023-12-21 2025-06-25 AB Sandvik Coromant Tête de coupe pour un outil de forage et outil de forage comprenant une telle tête de coupe
EP4585337A1 (fr) 2024-01-09 2025-07-16 AB Sandvik Coromant Procédé de fixation d'une tête de coupe remplaçable sur un corps d'outil allongé ou de libération de celui-ci d'un outil de coupe rotatif

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5988953A (en) * 1996-09-13 1999-11-23 Seco Tools Ab Two-piece rotary metal-cutting tool and method for interconnecting the pieces
EP1273373A1 (fr) * 2001-06-06 2003-01-08 Sandvik Aktiebolag Outil rotatif avec tête de coupe remplaçable
WO2006046227A1 (fr) * 2004-10-28 2006-05-04 Iscar Ltd. Ensemble d'outil coupant et tete coupante associee
WO2008014367A1 (fr) * 2006-07-26 2008-01-31 Allied Machine & Engineering Corp. Outil de coupe à pointe remplaçable

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT286064B (de) * 1968-01-04 1970-11-25 Hawera Hartmetall Werkzeugfarb Spiralbohrer
DE3306209C2 (de) * 1983-02-23 1985-02-28 Iscar Hartmetall GmbH, 7505 Ettlingen Bohrwerkzeug mit auswechselbarem Schneideinsatz
DE19543233A1 (de) * 1995-11-07 1997-05-15 Johne & Co Praezisionswerkzeug Bohrwerkzeug mit auswechselbarer Spitze
US6361255B1 (en) * 2000-10-30 2002-03-26 B & A Manufacturing Co. Drill bit with inscriber
US6739809B2 (en) * 2001-09-19 2004-05-25 Kennametal Inc. Cutting point for a drill
US6506003B1 (en) * 2001-10-02 2003-01-14 Kennametal Inc. Cutting tool
DE10207257B4 (de) * 2002-02-21 2021-02-18 Kennametal Inc. Rundlaufschneidwerkzeug mit auswechselbarem Schneideinsatz
US7309196B2 (en) * 2004-10-05 2007-12-18 Kennametal Inc. Modular drill
US7467915B2 (en) * 2004-10-06 2008-12-23 Kennametal Inc. Modular drill
SE529065C2 (sv) * 2004-10-20 2007-04-24 Seco Tools Ab Skärverktyg där skäret har en spånkanal som skär släppningsytan
SE528820C2 (sv) * 2004-12-14 2007-02-20 Seco Tools Ab Borrningsverktyg med justerbar kassett
IL181295A (en) * 2007-02-12 2011-07-31 Iscar Ltd A cutting tool that includes a self-locking release bar head
IL181296A0 (en) * 2007-02-12 2007-07-04 Iscar Ltd Tool with releasably mounted self-clamping cutting head
WO2008072840A2 (fr) * 2007-11-05 2008-06-19 Taegutec. Ltd. Fraise
US7625161B1 (en) * 2008-08-08 2009-12-01 Kennametal Inc. Rotary cutting tool assembly and cutting insert and tool shank therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5988953A (en) * 1996-09-13 1999-11-23 Seco Tools Ab Two-piece rotary metal-cutting tool and method for interconnecting the pieces
EP1273373A1 (fr) * 2001-06-06 2003-01-08 Sandvik Aktiebolag Outil rotatif avec tête de coupe remplaçable
WO2006046227A1 (fr) * 2004-10-28 2006-05-04 Iscar Ltd. Ensemble d'outil coupant et tete coupante associee
WO2008014367A1 (fr) * 2006-07-26 2008-01-31 Allied Machine & Engineering Corp. Outil de coupe à pointe remplaçable

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2939774A4 (fr) * 2012-12-28 2016-09-28 Kyocera Corp Mèche et procédé pour fabriquer un produit coupé l'utilisant
EP3427877A1 (fr) * 2017-07-10 2019-01-16 Sandvik Intellectual Property AB Insert de coupe rotatif et outil comportant des surfaces de support axialesinclinées
WO2019011732A1 (fr) * 2017-07-10 2019-01-17 Sandvik Intellectual Property Ab Insert de coupe rotatif et outil ayant des surfaces de support axiales inclinées
CN110799296A (zh) * 2017-07-10 2020-02-14 山特维克知识产权股份有限公司 具有下倾的轴向支撑表面的旋转切削刀片和刀具
US11826836B2 (en) 2017-07-10 2023-11-28 Sandvik Intellectual Property Ab Rotary cutting insert and tool having declined axial support surfaces

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CN102006959A (zh) 2011-04-06
EP2276598A1 (fr) 2011-01-26
KR101513764B1 (ko) 2015-04-20
EP2276598B1 (fr) 2020-01-01
SE0800834L (sv) 2009-10-15
KR20110004851A (ko) 2011-01-14
CN102006959B (zh) 2012-12-05
EP2276598A4 (fr) 2017-05-10
US20100021253A1 (en) 2010-01-28
SE532280C2 (sv) 2009-12-01
US8430609B2 (en) 2013-04-30

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